package com.tadpole.music.view.widget;

import android.annotation.SuppressLint;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Paint;
import android.graphics.PixelFormat;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;

import androidx.annotation.Nullable;

/**
 * Created by net on 2018-08-06.
 * https://www.cnblogs.com/JczmDeveloper/p/3873049.html
 */

@SuppressLint("AppCompatCustomView")
public class XCRoundRectImageView extends ImageView {
    private Paint paint;
    public XCRoundRectImageView(Context context) {
        this(context,null);
    }

    public XCRoundRectImageView(Context context, AttributeSet attrs) {
        this(context, attrs,0);
    }

    public XCRoundRectImageView(Context context, @Nullable AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        paint=new Paint();
        paint.setAntiAlias(true);
        paint.setDither(true);
    }

    /**
     * 绘制圆角矩形图片
     * @author caizhiming
     */
    @Override
    protected void onDraw(Canvas canvas) {

        Drawable drawable = getDrawable();
        if (null != drawable) {
            Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();

//            //使用此方法将drawable转换成bitmap
//            Bitmap bitmap = drawableToBitmap(drawable);
            //设置圆角的弧度
            Bitmap b = getRoundBitmap(bitmap, 10);
            final Rect rectSrc = new Rect(0, 0, b.getWidth(), b.getHeight());
            final Rect rectDest = new Rect(0,0,getWidth(),getHeight());
            paint.reset();
            canvas.drawBitmap(b, rectSrc, rectDest, paint);

        } else {
            super.onDraw(canvas);
        }
    }

    /**
     * 获取圆角矩形图片方法
     * @param bitmap
     * @param roundPx,一般设置成14
     * @return Bitmap
     * @author caizhiming
     */
    private Bitmap getRoundBitmap(Bitmap bitmap, int roundPx) {
        Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),
                bitmap.getHeight(), Bitmap.Config.ARGB_4444);
//        try {
            Canvas canvas = new Canvas(output);

            final int color = 0xff424242;

            final Rect rect = new Rect(0, 0, bitmap.getWidth(), bitmap.getHeight());
            final RectF rectF = new RectF(rect);
            canvas.drawARGB(0, 0, 0, 0);
            paint.setColor(color);
            int x = bitmap.getWidth();

            canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
            paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
            canvas.drawBitmap(bitmap, rect, rect, paint);

//        }catch (IllegalStateException e){
//            e.printStackTrace();
//        }
        return output;
    }

    /**
     * 将Drawable转换成bitmap
     *
     * @param drawable
     * @return
     */
    public static Bitmap drawableToBitmap(Drawable drawable) {

        int w = drawable.getIntrinsicWidth();
        int h = drawable.getIntrinsicHeight();
        Bitmap.Config config =
                drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888
                        : Bitmap.Config.RGB_565;
        Bitmap bitmap = Bitmap.createBitmap(w, h, config);
        //注意，下面三行代码要用到，否则在View或者SurfaceView里的canvas.drawBitmap会看不到图
        Canvas canvas = new Canvas(bitmap);
        drawable.setBounds(0, 0, w, h);
        drawable.draw(canvas);

        return bitmap;
    }
}
